Comparison between LCL and LLCL Filters For a Grid Connected Inverter Using Selective Harmonic Modulation

Chakroun, Rawia; Ayed, Ramzi Ben; Derbel, Nabil

doi:10.1109/redec49234.2020.9163595

Cited by 5 publications

(4 citation statements)

References 6 publications

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“…In the literature, such comparison, analysis, and application of the filter types considering converter transfer function especially by using an LCL trap filter for the isolated Ćuk DC-DC converter are not presented. However, comparisons of the L, LC, and LCL filters in [37], [38], [41], [42], and LC and LCL trap filters in [43], [44] are given for three phase rectifiers and inverter with respect to total harmonic distortion and power factor without considering the effect of the transfer function of the converter. It is stated in [37], [38], [41], [42] that the LCL filter has better attenuation compared to L and LC filters.…”

Section: Discussionmentioning

confidence: 99%

“…It is stated in [37], [38], [41], [42] that the LCL filter has better attenuation compared to L and LC filters. Further, [43], [44] state that the LCL trap filter has better attenuation than the LCL filter in rectifier or inverter studies. Similarly, in the present study the LCL trap filter gives better results for the isolated Ćuk DC-DC converter.…”

Section: Discussionmentioning

confidence: 99%

“…[41], [42] compare L, LC, and LCL filters in a simulation study for inverter applications and it is concluded that the LCL filter provides better attenuation with lower inductance. Comparison of LCL and LCL trap filters is realized by simulation study for a three phase rectifier in [43] and for a three phase inverter in [44]; [43] concludes that LCL trap filter topology provides less harmonic distortion and [44] states that both filters ensure the limits.…”

Section: Introductionmentioning

confidence: 99%

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Analysis of LCL Filter Topologies for DC-DC Isolated Cuk Converter at CCM Operation

Şehirli

2022

IEEE Access

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In this study, the application and analysis of LCL filter topologies including an LCL, an LCL with damping, and an LCL trap filter used by a DC-DC isolated Ćuk converter operated at CCM are presented. The converter is designed for 50 W with 42 kHz switching frequency using a SiC MOSFET as a power switch. Although LCL filter topologies are commonly used with an inverter, their use in DC-DC converters has not been studied in detail. The main contribution of the paper is the application, design, and analysis of an LCL trap filter, which is not presented for a DC-DC converter in the literature, as an input filter of a DC-DC isolated Ćuk converter. For exact analysis of the effect of the filter, as a second main contribution of the paper, a state-space average mathematical model, small signal analysis of an isolated Ćuk converter for CCM operation, which was not presented before in the literature, is derived and its transfer function is obtained. In this paper, the practical design and transfer functions of LCL-based filter topologies are also presented. In order to analyze the effect of filter topologies by using linear methods including root locus and Bode graphs, the transfer function of the converter is cascaded with the transfer function of each filter separately, which is the third contribution of the paper because such analysis has not been presented in the literature. Furthermore, each cascaded transfer function and the transfer function of the converter are validated by step responses. All LCL filters, with an LC filter for comparison, are employed in the experimental setup. Owing to the applications, control characteristics and input current ripples are measured. In addition, the efficiencies of each different structure are determined. As a result of the analysis and measurements, the LCL trap filter gives better results in terms of efficiency (86%) and input current ripple (0.96 A peak). Moreover, the LCL with damping filter gives poorer control characteristics, but the maximum gain of the controller avoiding the instability of LCL with damping is 0.0855, which is higher than that of the others. Furthermore, it is shown that each LCL filter topology provides a 45% lower total inductor value compared to the LC filter.

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Section: Discussionmentioning

confidence: 99%

Section: Discussionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Analysis of LCL Filter Topologies for DC-DC Isolated Cuk Converter at CCM Operation

Şehirli

2022

IEEE Access

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“…From these works, it is clear that an LCL [5] and an LLCL flter [6] combined with a selective harmonic elimination (SHE) [4] and a selective harmonic modulation (SHM) shall be used. In [7], a real case of a one MW PV is proposed, and a comparison of generated energy quality with LCL and LLCL combined with the SHM and SHE strategy [8] is shown, but until now, there is no research that demonstrates the efect of the suggested tolerance on the design of the PV system. Based on prior research, this work aims to investigate the infuence of the PV system's component tolerances.…”

Section: Introductionmentioning

confidence: 99%

Components’ Tolerance Impact on the Design of a Real Case of One MW PV Substation

Ayed

Chakroun

Derbel

et al. 2023

Discrete Dynamics in Nature and Society

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In this article, a real case of a one MW PV substation design problem is described. The impact of the tolerances of power components (mainly inductors and capacitors) on the design is highlighted through two studies using two different control strategies that are selective harmonic elimination (SHE) and selective harmonic modulation (SHM). The obtained results show that the components’ tolerances have a significant effect on the design, especially for the SHE strategy. While the design using SHM control shows a weak sensitivity to the components’ tolerance. In this study, an upgrade of the most sensitive control strategy is proposed in order to improve its sensitivity against components’ tolerance. The results show that the strategy upgrading leads not only to improving the sensitivity but also to generating better power quality.

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Selective Harmonic Mitigation of Cascaded H-Bridge Multilevel Converters Using Real-Coded Genetic Algorithm

Ghasemian,

Mohamadian,

Buccella

et al. 2024

2024 IEEE International Conference on Artificial Intelligence &Amp;amp; Green Energy (ICAIGE)

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Comparison between LCL and LLCL Filters For a Grid Connected Inverter Using Selective Harmonic Modulation

Cited by 5 publications

References 6 publications

Analysis of LCL Filter Topologies for DC-DC Isolated Cuk Converter at CCM Operation

Analysis of LCL Filter Topologies for DC-DC Isolated Cuk Converter at CCM Operation

Components’ Tolerance Impact on the Design of a Real Case of One MW PV Substation

Selective Harmonic Mitigation of Cascaded H-Bridge Multilevel Converters Using Real-Coded Genetic Algorithm

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